@article{MetzgerPietschGarstein1999,
  author    = {Metzger, T. H. and Pietsch, Ullrich and Garstein, E.},
  title     = {High-resolution lattice parameter measurement by x-ray grazing incidence diffraction: Application to the interface of silicon on sapphire},
  year      = {1999},
  language  = {en}
}
@article{EnglischPenacoradaBrehmeretal.1999,
  author    = {Englisch, Uwe and Penacorada, Florencio and Brehmer, Ludwig and Pietsch, Ullrich},
  title     = {X-ray and neutron reflection analysis of the structure and the molecular exchange process in simple and complex fatty acid salt Langmuir-Blodgett multilayers},
  year      = {1999},
  language  = {en}
}
@article{HolyStanglZerlauthetal.1999,
  author    = {Hol{\´y}, V{\´a}clav and Stangl, Jochen and Zerlauth, S. and Bauer, G{\"u}nther and Darowski, Nora and L{\"u}bbert, Daniel and Pietsch, Ullrich},
  title     = {Lateral arrangement of self-assembled quantum dots in an SiGe/Si superlattice},
  year      = {1999},
  language  = {en}
}
@article{StruthDecherSchmittetal.1999,
  author    = {Struth, Bernd and Decher, Gero and Schmitt, J. and Hofmeister, Wolfgang and Neißendorfer, Frank and Pietsch, Ullrich and Brezesinski, Gerald and M{\"o}hwald, Helmuth},
  title     = {Chemical modification of Topaz surfaces},
  issn      = {0928-4931},
  year      = {1999},
  language  = {en}
}
@article{GeuePietschHaferkornetal.1999,
  author    = {Geue, Thomas and Pietsch, Ullrich and Haferkorn, J. and Stumpe, Joachim and Date, R. W. and Fawcett, A. H.},
  title     = {Competition of alignment and aggregation? : Phenomena in constrained films of LC poly(olefin ulfone)s and maleic anhydride co- and terpolymers},
  year      = {1999},
  language  = {en}
}
@article{ZeimerBuggeGramlichetal.2000,
  author    = {Zeimer, Ute and Bugge, F. and Gramlich, S. and Smirnitzki, V. and Weyers, Markus and Tr{\"a}nkle, G. and Grenzer, J{\"o}rg and Pietsch, Ullrich and Cassabois, G. and Emiliani, V. and Lienau, C.},
  title     = {Evidence for strain-induced lateral carrier confinement in InGaAs quantum wells by low-temperature near-field spectroscopy},
  year      = {2000},
  language  = {en}
}
@article{MukherjeeBhattacharyaSanyaletal.2000,
  author    = {Mukherjee, M. and Bhattacharya, M. K. and Sanyal, M. K. and Geue, Thomas and Grenzer, J{\"o}rg and Pietsch, Ullrich},
  title     = {Temperature dependent thickness and surface tension of polymer films},
  isbn      = {81-7371295-6},
  year      = {2000},
  language  = {en}
}
@article{Pietsch2000,
  author    = {Pietsch, Ullrich},
  title     = {Investigations of semiconductor surfaces and interfaces by X-ray grazing incidence diffraction},
  issn      = {0011-3891},
  year      = {2000},
  language  = {en}
}
@article{ZhuangPietschStangletal.2000,
  author    = {Zhuang, Y. and Pietsch, Ullrich and Stangl, Jochen and Hol{\´y}, Vaclav and Darowski, Nora and Grenzer, J{\"o}rg and Zerlauth, S. and Sch{\"a}ffler, F. and Bauer, G{\"u}nther},
  title     = {In-plane strain and shape analysis of Si/SiGe nanostructures by grazing incidence diffraction},
  year      = {2000},
  language  = {en}
}
@article{ZhuangSchellingStangletal.2000,
  author    = {Zhuang, Y. and Schelling, Christoph and Stangl, Jochen and Penn, C. and Senz, S. and Sch{\"a}ffler, Friedrich and Roche, T. and Daniel, A. and Grenzer, J{\"o}rg and Pietsch, Ullrich and Bauer, G{\"u}nther},
  title     = {Structural and optical properties of Si/Si{1-x}Ge{x} wires},
  year      = {2000},
  language  = {en}
}
@article{GrenzerDarowskiPietschetal.2000,
  author    = {Grenzer, J{\"o}rg and Darowski, Nora and Pietsch, Ullrich and Daniel, A. and Reithmaier, Johann-Peter and Rennon, Siegfried and Forchel, Alfred},
  title     = {Grazing-incidence diffraction strain analysis of a laterally-modulated multiquantum well system produced by focused-ion-beam implantation},
  year      = {2000},
  language  = {en}
}
@article{KarcenkoEnglischGrenzeretal.2000,
  author    = {Karcenko, Anatolij V. and Englisch, Uwe and Grenzer, J{\"o}rg and Geue, Thomas and Pietsch, Ullrich and Siebrecht, R.},
  title     = {Investigation of partially deuterated multilayers by means of X-ray and polarized neutron reflectometry},
  issn      = {1044-8632},
  year      = {2000},
  language  = {en}
}
@article{ThuenemannKubowiczPietsch2000,
  author    = {Th{\"u}nemann, Andreas F. and Kubowicz, Stephan and Pietsch, Ullrich},
  title     = {Ultra-thin solid polyelectrolyte-surfactant complex films : structure and wetting},
  year      = {2000},
  language  = {en}
}
@article{PietschRochonNatansohn2000,
  author    = {Pietsch, Ullrich and Rochon, Paul and Natansohn, Almeria},
  title     = {Formation of a buried lateral density grating in azopenzene polymer films},
  year      = {2000},
  language  = {en}
}
@article{PietschDarowskiUlyanenkovetal.2000,
  author    = {Pietsch, Ullrich and Darowski, Nora and Ulyanenkov, A. and Grenzer, J{\"o}rg and Wang, K. H. and Forchel, Alfred},
  title     = {Analysis of the strain distribution in lateral nanostructures for interpreting photoluminescence data},
  year      = {2000},
  language  = {en}
}
@article{StahnGeueGrenzeretal.2000,
  author    = {Stahn, Jochen and Geue, Thomas and Grenzer, J{\"o}rg and Pietsch, Ullrich},
  title     = {Interaction of short-chain alkanes with surface and interfaces of multilayer films built from amphiphilic molecules: an in-situ X-ray and neutron scattering probe},
  year      = {2000},
  language  = {en}
}
@article{NeumannBuchsteinerMahleretal.2000,
  author    = {Neumann, Werner and Buchsteiner, Alexandra and Mahler, Willy and Geue, Thomas and Pietsch, Ullrich},
  title     = {Dielectric loss spectroscopy at fatty acid salt multilayers},
  year      = {2000},
  abstract  = {Dielectric loss spectroscopy (DLS) was performed at compact samples and lamellary organized Langmuir-Blodgett (LB) films from various fatty acid salts. Previous thermoanalytical measurements at compact samples revealed the appearance of two different phase transition temperatures; the lower one is related to the acid the second one to the acid salt molecules. In spite of ill defined electrical contacts with the film the characteristic DLS frequencies obtained from about 100nm thick multilayer films are similar to those recorded from bulk samples. No significant variations of frequencies were found changing the counter ions. Besides conductivity influence at low frequncies we found two relaxations related to the mobility of the dipolar carboxylat-metal group at about 100 and 10000Hz. One of these frequencies is related to the rotation around the chain axis. The strength of this relaxation increases significantly with increasing the sample temperature above 105°C. This temperature is connected with a structural phase transition observed by X-ray reflectometry. In case of Pb-stearate the results of the dielectric measurements help to interprete this structural change as a transition from an orthorhombic into a free-rotator phase. The uncorrelated rotation of molecules around their molecular axes initiates a much increased relaxation strength at the carboxylat-metal sites.},
  language  = {en}
}
@article{MukhopadhyayDattaSanyaletal.2001,
  author    = {Mukhopadhyay, M. K. and Datta, A. and Sanyal, M. K. and Geue, Thomas and Pietsch, Ullrich},
  title     = {Synchrotron Studies of Melting of Langmuir-Blodgett Films},
  year      = {2001},
  language  = {en}
}
@article{AvilovLepeshovPietschetal.2001,
  author    = {Avilov, Anatoly S. and Lepeshov, G. G. and Pietsch, Ullrich and Tsirelson, Vladimir G.},
  title     = {Multipole analysis of the electron density and electrostatic potential in Germanium by high-resolution electron diffraction},
  issn      = {0022-3697},
  year      = {2001},
  language  = {en}
}
@article{DavaasambuuDanielStahnetal.2001,
  author    = {Davaasambuu, Jav and Daniel, A. and Stahn, Jochen and Pietsch, Ullrich},
  title     = {Comparison of experimental and theoretical valence charge densites in cubic ZnSe},
  issn      = {0022-3697},
  year      = {2001},
  language  = {en}
}
@article{GrenzerDarowskiGeueetal.2001,
  author    = {Grenzer, J{\"o}rg and Darowski, Nora and Geue, Thomas and Pietsch, Ullrich and Daniel, A. and Rennon, Siegfried and Reithmaier, Johann-Peter and Forchel, Alfred},
  title     = {Strain analysis and quantum well intermixing of a laterally modulated multiquantum well system produced by focused ion beam implantation},
  year      = {2001},
  language  = {en}
}
@article{ZeimerGrenzerPietschetal.2001,
  author    = {Zeimer, Ute and Grenzer, J{\"o}rg and Pietsch, Ullrich and Bugge, F. and Smirnitzki, V. and Weyers, Markus},
  title     = {Investigation of strain-modulated InGaAs-nanostructures by grazing-incidence x-ray diffraction and photoluminescence},
  year      = {2001},
  language  = {en}
}
@article{ZeimerBuggeGramlichetal.2001,
  author    = {Zeimer, Ute and Bugge, F. and Gramlich, S. and Smirnitzki, V. and Weyers, Markus and Tr{\"a}nkle, G. and Grenzer, J{\"o}rg and Pietsch, Ullrich and Cassabois, G. and Emiliani, V. and Linau, Christoph},
  title     = {Evidence of strain-induced lateral carrier confinement in InGaAs-quantum wells by low-temperature near-field spectroscopy},
  year      = {2001},
  language  = {en}
}
@article{PietschGrenzerGeueetal.2001,
  author    = {Pietsch, Ullrich and Grenzer, J{\"o}rg and Geue, Thomas and Neißendorfer, Frank and Brezesinski, Gerald and Symietz, Christian and M{\"o}hwald, Helmuth and Gudat, Wolfgang},
  title     = {The energy dispersive reflectometer at BESSY II : a challenge for thin film analysis},
  issn      = {0167- 5087},
  year      = {2001},
  language  = {en}
}
@article{PietschZeimerHofmannetal.2001,
  author    = {Pietsch, Ullrich and Zeimer, Ute and Hofmann, L. and Grenzer, J{\"o}rg and Gramlich, S.},
  title     = {Strain induced compositional modulations in AlGaAs overlayers induced by lateral surface gratings},
  issn      = {0272-9172},
  year      = {2001},
  language  = {en}
}
@article{DavaasambuuDanielStahnetal.2001,
  author    = {Davaasambuu, Jav and Daniel, A. and Stahn, Jochen and Pietsch, Ullrich},
  title     = {Harmonic and anharmonic thermal vibrations in cubic ZnSe},
  issn      = {0044-2968},
  year      = {2001},
  language  = {en}
}
@article{TsirelsonAvilovLepeshovetal.2001,
  author    = {Tsirelson, Vladimir G. and Avilov, Anatoly S. and Lepeshov, G. G. and Kuligin, A. K. and Stahn, Jochen and Pietsch, Ullrich and Spence, J. C. H.},
  title     = {Quantitative Analysis of the Inner-Crystal Electrostatic Potential of several Rock-Salt-Structure Crystals Using Accurate Electron-Diffraction Data},
  issn      = {1089-5647},
  year      = {2001},
  language  = {en}
}
@article{StahnPietschBlahaetal.2001,
  author    = {Stahn, Jochen and Pietsch, Ullrich and Blaha, Pawel and Schwarz, K. H.},
  title     = {Electric field induced charge-density variations in covalently bonded compounds},
  year      = {2001},
  language  = {en}
}
@article{PoloucekPietschGeueetal.2001,
  author    = {Poloucek, P. and Pietsch, Ullrich and Geue, Thomas and Symietz, Christian and Brezesinski, Gerald},
  title     = {X-ray reflectivity analysis of thin complex Langmuir-Blodgett films},
  year      = {2001},
  language  = {en}
}
@article{PietschStahnDavaasambuuetal.2001,
  author    = {Pietsch, Ullrich and Stahn, Jochen and Davaasambuu, Jav and Pucher, Andreas},
  title     = {Electric field induced charge density variations in partially-ionic compounds},
  issn      = {0022-3697},
  year      = {2001},
  language  = {en}
}
@article{HennebergChiGeueetal.2001,
  author    = {Henneberg, Oliver and Chi, Li Feng and Geue, Thomas and Saphiannikova, Marina and Pietsch, Ullrich and Rochon, Paul and Natansohn, Almeria},
  title     = {Atomic force microscopy inspection of the early state of formation of polymer surface relief grating},
  year      = {2001},
  language  = {en}
}
@article{HennebergGeueSaphiannikovaetal.2001,
  author    = {Henneberg, Oliver and Geue, Thomas and Saphiannikova, Marina and Pietsch, Ullrich and Rochon, Paul and Natansohn, Almeria},
  title     = {Formation and dynamics of polymer surface relief gratings},
  issn      = {0378-5963},
  year      = {2001},
  language  = {en}
}
@article{Pietsch2002,
  author    = {Pietsch, Ullrich},
  title     = {Reversible negative thermal expansion of polymer films},
  year      = {2002},
  language  = {en}
}
@article{Pietsch2002,
  author    = {Pietsch, Ullrich},
  title     = {X-ray reflectivity from sinusoidal surface relief gratings},
  year      = {2002},
  language  = {en}
}
@article{BodenthinGrenzerLauteretal.2002,
  author    = {Bodenthin, Yves and Grenzer, J{\"o}rg and Lauter, Robert and Pietsch, Ullrich and Lehmann, Pit and Kurth, Dirk G. and M{\"o}hwald, Helmuth},
  title     = {Temperature and time resolved x-ray scattering at thin organic films},
  year      = {2002},
  language  = {en}
}
@article{GeueHennebergPietsch2002,
  author    = {Geue, Thomas and Henneberg, Oliver and Pietsch, Ullrich},
  title     = {X-ray reflectivity from sinusoidal surface relief gratings},
  issn      = {0023-4753},
  year      = {2002},
  language  = {en}
}
@article{GeueSaphiannikovaHennebergetal.2002,
  author    = {Geue, Thomas and Saphiannikova, Marina and Henneberg, Oliver and Pietsch, Ullrich and Rochon, Paul and Natansohn, Almeria},
  title     = {Formation mechanism and dynamics in polymer surface gratings},
  year      = {2002},
  language  = {en}
}
@article{GeueHennebergGrenzeretal.2002,
  author    = {Geue, Thomas and Henneberg, Oliver and Grenzer, J{\"o}rg and Pietsch, Ullrich and Natansohn, Almeria and Rochon, Paul and Finkelstein, Kenneth D.},
  title     = {Formation of a buried density grating on thermal erasure of azobenzene polymer surface gratings},
  issn      = {0927-7757},
  year      = {2002},
  language  = {en}
}
@article{PietschKubowiczThuenemannetal.2003,
  author    = {Pietsch, Ullrich and Kubowicz, Stephan and Th{\"u}nemann, Andreas F. and Geue, Thomas and Watson, M. D. and Tchebotareva, N. and M{\"u}llen, K.},
  title     = {X-ray reflectivity study of an amphiphilic hex-peri-hexabenzocoronene at a structured silicon wafer surface},
  year      = {2003},
  language  = {en}
}
@article{PietschHesseZhuangetal.2003,
  author    = {Pietsch, Ullrich and Hesse, A. and Zhuang, Y. and Hol{\´y}, Vaclav and Stangl, Jochen and Zerlauth, S. and Schaffler, F. and Bauer, G{\"u}nther},
  title     = {X-ray grazing-incidence study of inhomogeneous strain relaxation in Si/SiGe wires},
  issn      = {0168-583X},
  year      = {2003},
  language  = {en}
}
@article{PietschZeimerGrenzeretal.2003,
  author    = {Pietsch, Ullrich and Zeimer, Ute and Grenzer, J{\"o}rg and Grigorian, Souren A. and Fricke, J. and Gramlich, S. and Bugge, F. and Weyers, Markus and Trankle, G.},
  title     = {Influence of lateral patterning geometry on lateral carrier confinement in strain-modulated InGaAs- nanostructures},
  year      = {2003},
  language  = {en}
}
@article{PietschBhattacharyaMukherjeeetal.2003,
  author    = {Pietsch, Ullrich and Bhattacharya, M. K. and Mukherjee, M. and Sanyal, M. K. and Geue, Thomas and Grenzer, J{\"o}rg},
  title     = {Energy dispersive x-ray reflectivity technique to study thermal properties of polymer films},
  year      = {2003},
  language  = {en}
}
@article{PietschGrigorianGrenzeretal.2003,
  author    = {Pietsch, Ullrich and Grigorian, Souren A. and Grenzer, J{\"o}rg and Feranchuk, S. and Zeimer, Ute},
  title     = {Grazing-incidence diffraction study of strain-modulated single quantum well nanostructures},
  year      = {2003},
  language  = {en}
}
@article{PietschPanznerLeitenbergeretal.2003,
  author    = {Pietsch, Ullrich and Panzner, Tobias and Leitenberger, Wolfram and Grenzer, J{\"o}rg and Bodenthin, Th. and Geue, Thomas and M{\"o}hwald, Helmuth},
  title     = {Coherence experiments at the energy-dispersive reflectometry beamline at BESSY II},
  year      = {2003},
  language  = {en}
}
@article{PietschGeueHennebergetal.2003,
  author    = {Pietsch, Ullrich and Geue, Thomas and Henneberg, Oliver and Saphiannikova, Marina},
  title     = {X-ray investigations of formation efficiency of buried azobenzene polymer density gratings},
  doi       = {10.1063/1.1554753},
  year      = {2003},
  language  = {en}
}
@article{Pietsch2003,
  author    = {Pietsch, Ullrich},
  title     = {Evidence of a density grating under light induced formation of surface relief gratings at polymers containing azobenzene moieties},
  year      = {2003},
  language  = {en}
}
@article{PietschGrigorianGrenzeretal.2003,
  author    = {Pietsch, Ullrich and Grigorian, Souren A. and Grenzer, J{\"o}rg and Vartanyants, Ivan A.},
  title     = {Thermal diffuse scattering in grazing incidence diffraction},
  year      = {2003},
  language  = {en}
}
@article{PietschTsirelsonGorfan2003,
  author    = {Pietsch, Ullrich and Tsirelson, Vladimir G. and Gorfan, S. V.},
  title     = {X-ray scattering amplitude of an atom in a permanent external electric field},
  year      = {2003},
  language  = {en}
}
@article{Pietsch2003,
  author    = {Pietsch, Ullrich},
  title     = {Thin Layers of columns of an amphiphilic hexa-peri-hexabenzocoronene at silicon wafer surfaces},
  year      = {2003},
  language  = {en}
}
@article{HennebergGeueSaphiannikovaetal.2003,
  author    = {Henneberg, Oliver and Geue, Thomas and Saphiannikova, Marina and Pietsch, Ullrich and Rochon, Paul},
  title     = {X-ray and VIS light scattering from light-induced polymer gratings},
  doi       = {10.1088/0022-3727/36/10A/350},
  year      = {2003},
  language  = {en}
}